Setup - While the SDK is still a ~120 MB download, the local documentation is now an optional component if you prefer using only online MSDN documentation. Keep in mind though that local documentation is updated for each CTP, but the online documentation is only published every 3-4 months when we produce a "release" version of the SDK.

DSL Tools update (mostly bug fixes from what I understand)

Toolbar ComboBox Sample

Controls Sample : Now demonstrates integration of Help 2.0 (DExplore) content with controls